# SDR 20001011AP010

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 10, 2000
- Submitted: August 23, 2000
- Operation: Air carrier
- Aircraft: N427EX
- Make and model: Boeing 727-22C
- Registry model: [Boeing 727-22C](https://openairdocs.org/model/boeing-727-22c) (OpenAirDocs)
- Aircraft serial: 19090
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Valve
- Part number: 3923719
- Condition: Failed
- Location: Nr 1 Pack Supply
- Stage of operation: CL
- How discovered: O
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/20001011AP010

## Discrepancy

FLT 744 - LAX - STRONG SMELL OF SMOKE IN COCKPIT DURING TAKEOFF ROLL AND CLIMB-OUT.  AIR TURN BACK TO LAX.  REPLACED 13TH STAGE MODULATION VALVE ON NR 1 ENGINE AND BOTH COALESSOR BAGS.  (M)

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